package com.cc.utils.beanUtil;

import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;
import org.springframework.stereotype.Component;

/**
 * @User c.c
 * @Since 2023/4/19
 * @Time 13:49
 * @Description
 */

@Component
public class BeanUtils implements ApplicationContextAware {
  private static ApplicationContext applicationContext;


  /**
   * Spring容器会在创建该Bean之后，自动调用该Bean的setApplicationContext方法
   *
   * @param applicationContext
   */
  @Override
  public void setApplicationContext(ApplicationContext applicationContext) {
    if (BeanUtils.applicationContext == null) {
      BeanUtils.applicationContext = applicationContext;
    }
  }

  //获取applicationContext
  public static ApplicationContext getApplicationContext() {
    return applicationContext;
  }

  //通过name获取 Bean.
  public static Object getBean(String name) {
    return getApplicationContext().getBean(name);
  }

  //通过class获取Bean.
  public static <T> T getBean(Class<T> clazz) {
    return getApplicationContext().getBean(clazz);
  }

  //通过name,以及Clazz返回指定的Bean
  public static <T> T getBean(String name, Class<T> clazz) {
    return getApplicationContext().getBean(name, clazz);
  }

}
